diff --git a/ChangeLog.txt b/ChangeLog.txt
index f42a52f6a3..f2092de296 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -10,6 +10,10 @@
      * Change, ! Fix, % Optimization, + Addition, - Removal, ; Comment
  */
 
+2015-08-26 16:21 UTC+0200 Przemyslaw Czerpak (druzus/at/poczta.onet.pl)
+  * src/rtl/hbzsock.c
+    * pacified warning
+
 2015-08-26 15:51 UTC+0200 Przemyslaw Czerpak (druzus/at/poczta.onet.pl)
   * include/hbsocket.h
   * src/rtl/hbsockhb.c
diff --git a/src/rtl/hbzsock.c b/src/rtl/hbzsock.c
index 9b05a13e6e..1fa2d48ebe 100644
--- a/src/rtl/hbzsock.c
+++ b/src/rtl/hbzsock.c
@@ -251,7 +251,7 @@ static long s_sockexWrite( PHB_SOCKEX pSock, const void * data, long len, HB_MAX
          }
       }
 
-      return lWritten >= 0 ? len - pZ->z_write.avail_in : lWritten;
+      return lWritten >= 0 ? ( long ) ( len - pZ->z_write.avail_in ) : lWritten;
    }
    else
       return hb_sockexWrite( pSock, data, len, timeout );